[INFO] cloning repository https://github.com/Niedzwiedzw/rust_blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Niedzwiedzw/rust_blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiedzwiedzw%2Frust_blockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiedzwiedzw%2Frust_blockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 803a90b0b6eee337b1fd8cb679a935cdaa318423
[INFO] checking Niedzwiedzw/rust_blockchain against beta-2020-07-24 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiedzwiedzw%2Frust_blockchain" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Niedzwiedzw/rust_blockchain on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Niedzwiedzw/rust_blockchain
[INFO] finished tweaking git repo https://github.com/Niedzwiedzw/rust_blockchain
[INFO] tweaked toml for git repo https://github.com/Niedzwiedzw/rust_blockchain written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Niedzwiedzw/rust_blockchain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 657c3046f917a6c8a084e70ff1365fe0df724ba9301b7a0ddea69c412e753123
[INFO] running `Command { std: "docker" "start" "-a" "657c3046f917a6c8a084e70ff1365fe0df724ba9301b7a0ddea69c412e753123", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "657c3046f917a6c8a084e70ff1365fe0df724ba9301b7a0ddea69c412e753123", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "657c3046f917a6c8a084e70ff1365fe0df724ba9301b7a0ddea69c412e753123", kill_on_drop: false }`
[INFO] [stdout] 657c3046f917a6c8a084e70ff1365fe0df724ba9301b7a0ddea69c412e753123
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b11ce6c057a14349736c217aeedfcd27f2736170dab576ebe40e7ba04edd4a4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8b11ce6c057a14349736c217aeedfcd27f2736170dab576ebe40e7ba04edd4a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking byte-tools v0.3.0
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]     Checking opaque-debug v0.2.1
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking block-padding v0.1.2
[INFO] [stderr]     Checking generic-array v0.12.0
[INFO] [stderr]     Checking digest v0.8.0
[INFO] [stderr]     Checking block-buffer v0.7.0
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking rust-blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Sha256`
[INFO] [stdout]  --> src/blockchain.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_text`
[INFO] [stdout]  --> src/main.rs:4:36
[INFO] [stdout]   |
[INFO] [stdout] 4 | use self::blockchain::{BlockChain, to_text};
[INFO] [stdout]   |                                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sha256`
[INFO] [stdout]  --> src/blockchain.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_text`
[INFO] [stdout]  --> src/main.rs:4:36
[INFO] [stdout]   |
[INFO] [stdout] 4 | use self::blockchain::{BlockChain, to_text};
[INFO] [stdout]   |                                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Digest`
[INFO] [stdout]  --> src/blockchain.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Digest`
[INFO] [stdout]  --> src/blockchain.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sha2::{Sha256, Digest};
[INFO] [stdout]   |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BUFF_SIZE`
[INFO] [stdout]   --> src/main.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const BUFF_SIZE: usize = DATA_SIZE + HASH_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `BlockBuff`
[INFO] [stdout]   --> src/main.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | type BlockBuff = [u8; BUFF_SIZE];
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BUFF_SIZE`
[INFO] [stdout]   --> src/main.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const BUFF_SIZE: usize = DATA_SIZE + HASH_SIZE;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `BlockBuff`
[INFO] [stdout]   --> src/main.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | type BlockBuff = [u8; BUFF_SIZE];
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.54s
[INFO] running `Command { std: "docker" "inspect" "8b11ce6c057a14349736c217aeedfcd27f2736170dab576ebe40e7ba04edd4a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b11ce6c057a14349736c217aeedfcd27f2736170dab576ebe40e7ba04edd4a4", kill_on_drop: false }`
[INFO] [stdout] 8b11ce6c057a14349736c217aeedfcd27f2736170dab576ebe40e7ba04edd4a4
